EP0057164B1 - Dispositif pour le couplage d'un faisceau laser à une fibre optique - Google Patents

Dispositif pour le couplage d'un faisceau laser à une fibre optique Download PDF

Info

Publication number
EP0057164B1
EP0057164B1 EP82830012A EP82830012A EP0057164B1 EP 0057164 B1 EP0057164 B1 EP 0057164B1 EP 82830012 A EP82830012 A EP 82830012A EP 82830012 A EP82830012 A EP 82830012A EP 0057164 B1 EP0057164 B1 EP 0057164B1
Authority
EP
European Patent Office
Prior art keywords
optical fibre
lens
laser beam
laser
wedges
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP82830012A
Other languages
German (de)
English (en)
Other versions
EP0057164A3 (en
EP0057164A2 (fr
Inventor
Eugenio Penco
Angelo Tranquilli
Maurizio Tomassini
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Leonardo SpA
Original Assignee
Selenia Industrie Elettroniche Associate SpA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Selenia Industrie Elettroniche Associate SpA filed Critical Selenia Industrie Elettroniche Associate SpA
Publication of EP0057164A2 publication Critical patent/EP0057164A2/fr
Publication of EP0057164A3 publication Critical patent/EP0057164A3/en
Application granted granted Critical
Publication of EP0057164B1 publication Critical patent/EP0057164B1/fr
Expired legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/42—Coupling light guides with opto-electronic elements
    • G02B6/4201—Packages, e.g. shape, construction, internal or external details
    • G02B6/4219—Mechanical fixtures for holding or positioning the elements relative to each other in the couplings; Alignment methods for the elements, e.g. measuring or observing methods especially used therefor
    • G02B6/422—Active alignment, i.e. moving the elements in response to the detected degree of coupling or position of the elements
    • G02B6/4227—Active alignment methods, e.g. procedures and algorithms
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/26—Optical coupling means
    • G02B6/262—Optical details of coupling light into, or out of, or between fibre ends, e.g. special fibre end shapes or associated optical elements
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/42—Coupling light guides with opto-electronic elements
    • G02B6/4201—Packages, e.g. shape, construction, internal or external details
    • G02B6/4204—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms
    • G02B6/4206—Optical features
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
    • H01S3/08—Construction or shape of optical resonators or components thereof
    • H01S3/08059—Constructional details of the reflector, e.g. shape

Definitions

  • the present invention relates to a device for coupling a laser beam to an optical Ttbre in accordance with the generic clause of claim 1.
  • lasers are used as transmitters for optical communication systems.
  • optical fibres are used for guiding the laser beam to an optical receiver.
  • lasers are used as energy sources.
  • the optical fibre which is optically coupled to the laser acts as a bistoury for operations both internally and externally to the body.
  • the laser powers required in these applications are rather high, namely in the range of 10-100W.
  • the optical coupling takes place between a laser having relatively large dimensions and an optical guiding element or optical fibre which is of the sub-millimetric dimensions.
  • Such a mutual adjustability of the system necessitates different mechanical supports for the output mirror, the lens and the optical fibre having a complex structure.
  • Another drawback of this prior art device consists in that the mutual alignment of the output mirror, the lens and the optical fibre causes a great deal of work.
  • the present invention is based on the technical task of how to provide a device in accordance with the generic clause of claim 1 such that the deviation and the direction of the laser beam with respect to the optical axis of the optical fibre can be easily adjusted wherein the device should have a compact and simple structure.
  • the device in accordance with the present invention has the following advantages:
  • the focal lens is integrated with the output mirror of the laser, both constituting a piano-convex optical device.
  • the coaxial alignment of the output beam emitted from said piano-convex optical device with respect to the axis of the optical fibre is attained by using wedges having a small angle a which allows the beam to be rotated along a conic surface whose aperture can be varied according to the mutual position of the two prisms from 0° to a- ⁇ /20.
  • figure 1 schematically shows a prior art device
  • the prior art device shown in figure 1 comprises a laser, an output mirror, a lens and an optical fibre.
  • the output mirror of the laser is so mounted as to be pivoted with respect to two orthogonal axes x, y.
  • the lens is supported such that it can be pivoted with respect to two orthogonal axes x, y and that it can be moved in two orthogonal directions x, y.
  • the optical fibre can be moved along three orthogonal directions x, y and z.
  • Reference numeral d 1 designates the distance between the output mirror and the lens; f is the focal length of the lens.
  • Reference numeral d 2 designates the distance between the lens and the optical fibre.
  • Figure 2 shows the laser beam passing through the focalizing lens, the diameter of the laser beams at the output mirror is designated with 2 W 1 .
  • 2 W 2 is the focussed diameter of the laser beam at input plane of the optical fibre.
  • the coupling can D e ennanced by reducing the diameter of the beam at the input plane by means of suitably choosing the distances d, and d 2 and the focal length f, wherein f comes close to d 2 .
  • This condition is implemented by integrating the lens in the output mirror of the laser, i.e. by implementing a piano-convex optical device, wherein the plane face thereof has an optical reflecting power suitable for the operation of the laser, and wherein its convex face is covered by an anti-reflectant coating and has a suitable curvature for implementing the described focal lengths.
  • This integrated structure allows the movements of the lens to be eliminated, since the lens is automatically aligned with respect to the mirror within the tolerances of the optical device.
  • the wedges 4, 4' each having a small angle a having typical values of about 2° allow the rotation of the laser beam along a conic surface, whose aperture can be varied according to the mutual position of the two prisms 4, 4' from 0° to aV2°.
  • the rotation of these two wedges 4, 4' can be accomplished by means of a rack and pinion drive.
  • reference numeral 1 indicates the laser having an integrated output mirror comprising the focussing lens 2 having a plane and convex surface, wherein the lens 2 is secured by supports 3.
  • Reference numerals 4, 4' indicate the wedges for aligning the beam with respect to the axis of the optical fibre 5 which is sustained by the structure 6.

Claims (5)

1. Dispositif de couplage d'un faisceau laser (1) à une fibre optique (5) comprenant une lentille de concentration du faisceau laser (1) sur une face d'extrémité de ladite fibre optique (5), caractérisé par une lentille plan-convexe (2) dont la face plane constitue le miroir de sortie du laser (1) et par un double coin (4,4') constitué de deux petits coins de puissance variable qui permettent d'ajuster l'écart et la direction du faisceau laser par rapport à la fibre optique (5).
2. Dispositif selon la revendication 1, caractérisé par le fait que ladite lentille de concentration (2) est recouverte d'un revêtement anti-reflet.
3. Dispositif selon la revendication 1 ou 2, caractérisé par le fait qui la fibre optique (5) est maintenue par un support rigide (6) ayant la forme d'un tronc de cône, qui permet à la fibre optique (5) de se déplacer uniquement le long de son axe longitudinal afin d'obtenir les meilleures conditions de concentration.
4. Dispositif selon l'une des revendications 1 à 3, caractérisé par le fait que la position mutuelle des coins (4, 4') est définie au moyen d'un entraînement à crémaillère et pignon.
5. Dispositif selon l'une des revendications 1 à 4, caractérisé par le fait que le petit angle desdits coins (4, 4') se situe au voisinage de 2°.
EP82830012A 1981-01-22 1982-01-22 Dispositif pour le couplage d'un faisceau laser à une fibre optique Expired EP0057164B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT47615/81A IT1170643B (it) 1981-01-22 1981-01-22 Dispositivo perfezionato per l'accoppiamento di un fascio laser ad una fibra ottica
IT4761581 1981-01-22

Publications (3)

Publication Number Publication Date
EP0057164A2 EP0057164A2 (fr) 1982-08-04
EP0057164A3 EP0057164A3 (en) 1982-08-25
EP0057164B1 true EP0057164B1 (fr) 1985-04-24

Family

ID=11261443

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82830012A Expired EP0057164B1 (fr) 1981-01-22 1982-01-22 Dispositif pour le couplage d'un faisceau laser à une fibre optique

Country Status (4)

Country Link
US (1) US4475788A (fr)
EP (1) EP0057164B1 (fr)
DE (1) DE3263201D1 (fr)
IT (1) IT1170643B (fr)

Families Citing this family (42)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8300139D0 (en) * 1983-01-05 1983-02-09 Plessey Co Plc Optical alignment methods
GB2137768B (en) * 1983-02-23 1986-06-04 Plessey Co Plc Optical connectors
NL8402931A (nl) * 1983-08-12 1985-04-16 Mitsubishi Electric Corp Optisch koppelorgaan.
US4732450A (en) * 1985-02-27 1988-03-22 Amada Engineering & Service Co., Inc. Input/output coupling device for optical fiber used in high power laser beam delivery
US4707073A (en) * 1985-09-04 1987-11-17 Raytheon Company Fiber optic beam delivery system for high-power laser
US4753511A (en) * 1985-10-07 1988-06-28 Eastman Kodak Company Optical connector and adaptor kit for selective attenuation of signals in optical fiber circuits
US4865029A (en) * 1986-04-24 1989-09-12 Eye Research Institute Of Retina Foundation Endophotocoagulation probe
US4752109A (en) * 1986-09-02 1988-06-21 Amp Incorporated Optoelectronics package for a semiconductor laser
US4762395A (en) * 1986-09-02 1988-08-09 Amp Incorporated Lens assembly for optical coupling with a semiconductor laser
US4818053A (en) * 1986-09-02 1989-04-04 Amp Incorporated Optical bench for a semiconductor laser and method
US4762386A (en) * 1986-09-02 1988-08-09 Amp Incorporated Optical fiber assembly including means utilizing a column load to compensate for thermal effects
US4850668A (en) * 1987-03-17 1989-07-25 Hosain Hakimi Gyroptic visual couplers
US4818049A (en) * 1987-06-10 1989-04-04 Allied-Signal Inc. Method and apparatus for efficiently conveying light over a distance and effecting controlled illumination by projection thereof
US4844618A (en) * 1987-06-11 1989-07-04 Hamar M R Alignment apparatus with single mode fiber optic stabilizer
DK158169C (da) * 1987-08-31 1990-09-03 Dantec Elektronik Med Indkoblingsmanipulator for laserlys til en optisk fiber
GB8723595D0 (en) * 1987-10-08 1987-11-11 British Telecomm Optical package
IT1211499B (it) * 1987-11-05 1989-11-03 Cselt Centro Studi Lab Telecom Dispositivo per l accoppiamento fra fibre ottiche monomodali
US4840450A (en) * 1988-02-03 1989-06-20 General Electric Company Apparatus and method for optical fiber end positioning for laser injection
US4842391A (en) * 1988-02-05 1989-06-27 Tacan Corporation Two spherical lens optical coupler
US4822974A (en) * 1988-02-18 1989-04-18 United Technologies Corporation Laser hold drilling system with lens and two wedge prisms including axial displacement of at least one prism
US4917083A (en) * 1988-03-04 1990-04-17 Heraeus Lasersonics, Inc. Delivery arrangement for a laser medical system
US4919506A (en) * 1989-02-24 1990-04-24 General Electric Company Single mode optical fiber coupler
US4868718A (en) * 1989-03-13 1989-09-19 General Electric Company Forward illumination lighting system for vehicles
EP0422371A1 (fr) * 1989-09-20 1991-04-17 Siemens Aktiengesellschaft Dispositif optique pour coupler la radiation d'un laser à semi-conducteur en une fibre optique sans rétroaction
US5013120A (en) * 1990-05-31 1991-05-07 Conoco Inc. Monochromator to fiber-cable coupling system
AU649707B2 (en) * 1990-08-01 1994-06-02 Diomed Limited High power light source
US7046711B2 (en) * 1999-06-11 2006-05-16 High Q Laser Production Gmbh High power and high gain saturation diode pumped laser means and diode array pumping device
JP2003502849A (ja) * 1999-06-11 2003-01-21 コプフ、ダニエル 高パワーおよび高利得飽和ダイオードポンピングレーザ手段およびダイオードアレイポンピングデバイス
DE10006614C2 (de) * 2000-02-15 2002-02-14 Tui Laser Ag Kopplungsvorrichtung
US6501772B1 (en) * 2000-08-11 2002-12-31 Litton Systems, Inc. Microlaser assembly having a microresonator and aligned electro-optic components
GB2366542B (en) * 2000-09-09 2004-02-18 Ibm Keyboard illumination for computing devices having backlit displays
US20020168147A1 (en) * 2001-02-20 2002-11-14 Case Steven K. Optical circuit pick and place machine
US20040212802A1 (en) * 2001-02-20 2004-10-28 Case Steven K. Optical device with alignment compensation
US6633700B2 (en) * 2001-07-31 2003-10-14 Corning Incorporated Double lens array for optical cross-connects
US6876790B2 (en) * 2002-05-17 2005-04-05 Science & Engineering Services, Inc. Method of coupling a laser signal to an optical carrier
FR2845023B1 (fr) * 2002-09-26 2004-10-29 Commissariat Energie Atomique Installation de soudage en chanfreins etroits
JP4897526B2 (ja) * 2007-03-23 2012-03-14 コニカミノルタオプト株式会社 レーザモジュールの光軸調整方法
DE102010003750A1 (de) 2010-04-08 2011-10-13 Trumpf Laser- Und Systemtechnik Gmbh Verfahren und Anordnung zum Verändern der Strahlprofilcharakteristik eines Laserstrahls mittels einer Mehrfachclad-Faser
US9638493B2 (en) 2011-11-26 2017-05-02 Orval E. Bowman Pointing devices, apparatus, systems and methods for high shock environments
US8826582B2 (en) * 2011-11-26 2014-09-09 Orval E. Bowman Pointing devices, apparatus, systems and methods for high shock environments
JP6970877B2 (ja) * 2016-12-12 2021-11-24 パナソニックＩｐマネジメント株式会社 ファイバ結合装置
KR102372315B1 (ko) * 2021-08-09 2022-03-08 한화시스템(주) 고출력 레이저 다이오드 모듈 조립체

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3454330A (en) * 1965-06-28 1969-07-08 Technical Operations Inc Coherent optical joint
US3703176A (en) * 1970-05-28 1972-11-21 Arthur Vassiliadis Slit lamp photocoagulator
US3870398A (en) * 1973-07-05 1975-03-11 Corning Glass Works Passive coupler for optical communication system
JPS5360651A (en) * 1976-11-12 1978-05-31 Hitachi Ltd Semiconductor laser with optical fibers
GB1594336A (en) * 1977-12-20 1981-07-30 Plessey Co Ltd Opitcal apparatus for switching or variably coupling light between a plurality of optical fibre light guides
GB2026194A (en) * 1978-07-24 1980-01-30 Gen Electric Co Ltd Optical fibre coupling

Also Published As

Publication number Publication date
DE3263201D1 (en) 1985-05-30
EP0057164A3 (en) 1982-08-25
IT1170643B (it) 1987-06-03
EP0057164A2 (fr) 1982-08-04
IT8147615A0 (it) 1981-01-22
US4475788A (en) 1984-10-09

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